Patents by Inventor Clair Frederick Rohe

Clair Frederick Rohe has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Image rotation with substantially no aliasing error
    Patent number: 7956873
    Abstract: A system, method and program product for rotating a first image in an image buffer such that the resulting, rotated image is substantially free of an aliasing error, i.e., broken lines, stair stepped edges, etc., is disclosed. An algorithm is applied to the first image that uses weighted sums of data points of the first image to create the rotated image. The weighting is based on the skew angle and data point location of the first image. The resulting rotated image also has a reduced data storage space requirement compared to rotated images created by prior art techniques.
    Type: Grant
    Filed: April 3, 2008
    Date of Patent: June 7, 2011
    Assignee: International Business Machines Corporation
    Inventors: Ravi Prakash, Clair Frederick Rohe, Robert E. Shirley
  • Image rotation with substantially no aliasing error
    Patent number: 7411593
    Abstract: A system, method and program product for rotating a first image in an image buffer such that the resulting, rotated image is substantially free of an aliasing error, i.e., broken lines, stair stepped edges, etc., is disclosed. An algorithm is applied to the first image that uses weighted sums of data points of the first image to create the rotated image. The weighting is based on the skew angle and data point location of the first image. The resulting rotated image also has a reduced data storage space requirement compared to rotated images created by prior art techniques.
    Type: Grant
    Filed: March 28, 2001
    Date of Patent: August 12, 2008
    Assignee: International Business Machines Corporation
    Inventors: Ravi Prakash, Clair Frederick Rohe, Robert E. Shirley
  • IMAGE ROTATION WITH SUBSTANTIALLY NO ALIASING ERROR
    Publication number: 20080186333
    Abstract: A system, method and program product for rotating a first image in an image buffer such that the resulting, rotated image is substantially free of an aliasing error, i.e., broken lines, stair stepped edges, etc., is disclosed. An algorithm is applied to the first image that uses weighted sums of data points of the first image to create the rotated image. The weighting is based on the skew angle and data point location of the first image. The resulting rotated image also has a reduced data storage space requirement compared to rotated images created by prior art techniques.
    Type: Application
    Filed: April 3, 2008
    Publication date: August 7, 2008
    Inventors: Ravi Prakash, Clair Frederick Rohe, Robert E. Shirley
  • Image rotation with substantially no aliasing error
    Publication number: 20020171664
    Abstract: A system, method and program product for rotating a first image in an image buffer such that the resulting, rotated image is substantially free of an aliasing error, i.e., broken lines, stair stepped edges, etc., is dislosed. An algorithm is applied to the first image that uses weighted sums of data points of the first image to create the rotated image. The weighting is based on the skew angle and data point location of the first image. The resulting rotated image also has a reduced data storage space requirement compared to rotated images created by prior art techniques.
    Type: Application
    Filed: March 28, 2001
    Publication date: November 21, 2002
    Applicant: International Business Machines Corporation
    Inventors: Ravi Prakash, Clair Frederick Rohe, Robert E. Shirley